 /*******************************************************************************
  * Copyright (c) 2000, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ui.internal.ide;

 import org.eclipse.core.resources.IMarker;
 import org.eclipse.core.runtime.CoreException;

 /**
  * Implementation of IMarkerImageProvider to provide the image
  * path names for problem markers.
  */
 public class ProblemImageProvider implements IMarkerImageProvider {
     /**
      * TaskImageProvider constructor comment.
      */
     public ProblemImageProvider() {
         super();
     }

     /**
      * Returns the relative path for the image
      * to be used for displaying an marker in the workbench.
      * This path is relative to the plugin location
      *
      * Returns <code>null</code> if there is no appropriate image.
      *
      * @param marker The marker to get an image path for.
      *
      */
     public String getImagePath(IMarker marker) {
         String iconPath = "/icons/full/";//$NON-NLS-1$
 if (isMarkerType(marker, IMarker.PROBLEM)) {
             switch (marker.getAttribute(IMarker.SEVERITY,
                     IMarker.SEVERITY_WARNING)) {
             case IMarker.SEVERITY_ERROR:
                 return iconPath + "obj16/error_tsk.gif";//$NON-NLS-1$
 case IMarker.SEVERITY_WARNING:
                 return iconPath + "obj16/warn_tsk.gif";//$NON-NLS-1$
 case IMarker.SEVERITY_INFO:
                 return iconPath + "obj16/info_tsk.gif";//$NON-NLS-1$
 }
         }
         return null;
     }

     /**
      * Returns whether the given marker is of the given type (either directly or indirectly).
      */
     private boolean isMarkerType(IMarker marker, String type) {
         try {
             return marker.isSubtypeOf(type);
         } catch (CoreException e) {
             return false;
         }
     }
 }

